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    njb311's Avatar
    njb311 Posts: 1, Reputation: 1
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    #1

    Nov 25, 2011, 09:15 AM
    Comfortmaker RPJ 2 inducer fan runs constantly nothing else happens
    I have disconnected the unit at the power supply waited a few minutes and as soon as I power on inducer fan starts immediately no matter if its in heat or ac mode.
    mygirlsdad77's Avatar
    mygirlsdad77 Posts: 5,713, Reputation: 339
    Plumbing Expert
    		  
    #2

    Nov 25, 2011, 06:11 PM
    Try disonnecting all thermostat wires from the furnace control. If it still runs, check for any open high limits, or flame rollout switches. If it still runs, you have a stuck inducer fan relay, or a bad control board, all depening on where the power to the fan comes from . Trace the wires back from the inducer motor and see where they go. If to an individual relay, give it a good wack with a screwdriver and see if it will stop running.
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